A037689 Base 5 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,0,3.

1, 7, 35, 178, 891, 4457, 22285, 111428, 557141, 2785707, 13928535, 69642678, 348213391, 1741066957, 8705334785, 43526673928, 217633369641, 1088166848207, 5440834241035, 27204171205178, 136020856025891, 680104280129457

Offset

1,2

Links

Table of n, a(n) for n=1..22.

Index entries for linear recurrences with constant coefficients, signature (5,0,0,1,-5).

Formula

G.f.: ( x*(1+2*x+3*x^3) ) / ( (x-1)*(5*x-1)*(1+x)*(x^2+1) ). - R. J. Mathar, Oct 11 2015

Crossrefs

Sequence in context: A268990 A005055 A037506 * A051926 A297602 A289991

Adjacent sequences: A037686 A037687 A037688 * A037690 A037691 A037692

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved